Register construction for heating plants



Nov. 6, 41928.

E. A. GRAPP REGISTER coNsTRUcTIoN Fox HEATING PLANTS 'Filed April 1, 1927 C a 4 i e 0,

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Patented Nov. 6, 1928.

UNITED STATES PATENT OFFICE.

REGISTER CONSTRUCTION FOR HEATING PL-ANTS.

Application led April 1, 1827. Serial No. 180,262.

This invent-ion relates to improvements in moist or hot air heating system equipment, and the primary object is to provide an improved construction of register wherein the same may be tightly fitted against the Wall in' order to prevent the escape of air and dust upwardly along the wall and thereby prevent the streaking and soiling of the wall by such escaping air and dust. Further and more specific objects will be disclosed in the course of the following specification, reference being had to the accompanying drawing, wherein: Fig. 1 is a perspective view of my improved register. Fig. 2 is an enlarged sectional elevation as on the line 2-2 in Fig. 1, and illustrating the association of the wall and air stack which' are also shown in section.

Fig. 3 is an enlarged detail perspective view showing one of the upper corners of the re ister, as seen from Wit-hin. Y

eferring to the drawing more particularly and by reference characters, A designates the floor and B the wall of a room, which is heated from the register C which is connected with the hot air pipe or stack D, which projects up through the floor andA wall from the heating plant (not shown) in the basement.

The-register C is of the sloping shell type, having a grilled face 4 and a marginal flange 5. The register is further provided, about,

the limits of the grille 4, with a rearwardly "projecting inner flange 6, which fits snugly with the end of the air stack D, so that the upcoming Warm air can only escape through the grid 4. The register i's also provided with the usual shutter or damper 7, the po,

sition of which may be manua-lly regulated by a hand lever 8. Secured upon the inner side of and extending along the entire rear edges of the flanges 5, I provide a resilient, rearwardly projecting strip 9 which may be made of felt, leather or any other suitably flexible material. This strip is suitably secured and held in place by a metallic strap 10, which forms a channel with the flange 5, for receiving the strip, and-has an offset shoulder or rim 11 by which it may be secured to the iiange 5 as by welding, bracing, riveting or the like.

It is a well known fact that the streaking and soiling of walls above registers of this class isa common and very disagreeable oc- A currence, and that it is due to the further fact that it is practically impossible to tit theregister shell against the Wall without leaving crevices through which air may es` cape upwardly, because most registers are placed directly against the face of the plaster and such plaster faces almost-always present an irregular contour. This diiculty has long been recognized and while some attempts have been made to overcome it, those attempts that have come to my attention yhave been unsuccessful largely due to the fact that the situation is not fully understood. Thus, for inst-ance, it has been assumed `that the dirt streaks have resulted from an escape of the heated air which comes up through theflue or stack Dwith a result that various attempts have been lnade to seal or close the joints between the flange 6 and the end of the flue D. This is shown for instance in the Patent No. 1,336,210, to Druliner. But even when the 6-D joint is made perfectly tight it is found that the streaking of the wall continues as before, and for the following reason. I have found that it not usually the heated air from the furnace, thatcomes up within the stack D, that is the source of the trouble, but, rather, the air about the stack and Within the shell 5, which upon becoming warmed by the stack starts to circulate and escapes through any crevice that it finds, and as it escapes itis replaced by other air which may either creep up under the lower edge of the shell or may follow the outer surface of the stack, from the` basement, through the holes which have been cut in the Wall and fioor to accommodate the stack.

When my improved register is put in place, it is securely fastened, against the wall, and -as the strip 9 isiexible it will yieldaccording to the contour of the'wall, thus insuring an air tight joint between the wall and the entire 95 register shell. The air within the shell is now confined, and while it may circulate to a limited extent, it cannot 'escape into' the room, and consequently cannot effect the objectionabledeposit of dustl'upon the adjacent l wall surface. v f

Itis understood that suitable modifications may be made in the general design and struc-` tural details of the invention as herein shown,

ing a. marginal Harige spaced from the stack, 10

a yieldable element extending about the edge of said flange, and means tor securing the element to the inner face of the flange, said means comprising a strap secured to the inner face of the flange and forming a channel 15 therewith for holding the element.

In testimony whereof I allx my signature.

EDWARD A. GRAPP. 

